Improved mincing-knife



s. c. KEICHUML Mincing Knife, No.- 65,233. Patented May 28, 1867.

y w I ("/5 vr0 ALL WHOM IT MAY CONCERN;

@aitth tsttsgsttnt ffite,

' STEPHEN o. KETCHUM, 0F winonnnnon, MASSACHUSETTS,

Liam Patent No. 65,233,,dated Ma 28, 1867 IMPROVED momsmm.

6th .Srhehule marsh in in ilJtSt Esttnfirttztt mar linking and st flgs'samt.

Be zit known thatI, STEPHEN O. KETCHUM,- of the town of W'inehendcn, in the county of Worcester, inthc State of Massachusetts, have invented certain new and useful improvements in Chopping or-Mincing-Knives;

and, the following'is a fnll elear, and exact description of the same referenee beinghad to the accompanying drawings, making a part of this specification, in which- Figure 1 represents a side view of my improved chopping-knife.

Figure 2 shows an edge view of the same. I

Figure 3 shows a perspective view, with the blades-and shank broken off. t

The object of my invention is to facilitate the process of chopping or mineing, by giving a drawing stroke to the'euttcrs, arid consists in the construction and arrangement of a double-bladed choppingknife, the blades beihg so pivoted to the shank as to give a drawing stroke onv the substance to beminced, and at the same time conforhi to the curve or shape of the boyvl or tray the. cutting-blades being held in such a position, by springs made adjustable with a thumb-screw and nut, that anyrequired' stiffness to the action of the blades may be obtained.

To enable others to make and use my invention, I will describe it more fully, referring to thedrawings, and v to the letters marked-thereon. i I v Imake the handlo-shankA of iron or steel, \vitha slit or opening a a, in the lowerend A, into which are fitted the knives or cutting-blades BB, they being securediby the pivot or screw 6 in such manner as to allow theui to bemoved on the pivot, as the edge of the blades are? brought in contact with and pressed upon any substance. In orderto make the cutting blades B B operative, and give them elliciency, I secure'to the shank A, on both sides,'steel springs O C, which have slits c c in their lower ends to pass on to the upper edges of the cutting bladcs B B, where they have bearings or pins (1 0?, so that the blades are always kept in the position to give a drawing cut'whenever the instrument is pressed or forced down on to the substance; and any desired. fofc'e can be applied tathe action of the blades by the bolt and thuznb-nnt D operating on the springs G C for that purpose; To the upper end of the shank A a turned handle, E, of hard wood, is put on, so that the chopping-knife is used by hand in the usual'manner.

The'advantagcs of my improvement will be readily seen and easily understood, as it is a well-known fact that any substance, and especially meat; is much easier cut by a drawing stroke and other advantages are, that the cutting edges conform to the concave or curve of the bowl or tray that is used for the purpose of mincing.

Having. thus fully described my invention,'ivhat I claim as new, and desire to secure by Letters Patent, is?- 1. A double-bladed chopping-knife, theblades being so pivoted to the shankas to give a drawing out at each stroke, substantially as described.

I claim so hinging two or more blades or knivostogether, and supporting-them in such aposition with springs, as to allow the cutting edges to conform to any suitable concave, or the lcnrves of a chopping-tray or bowl, as herein' described. k

8. I claim the combination of the -cutting-blade's B B, fulcrum-pins d d, shank A, springs G U. with the bolt and thumb-nut D, operating in the manner herein described, for the purposes set forth- .In tcstimonywhereof I hereunto set my hand this 26th day of March .1867.

I i Y STEPHEN C. KE'lC-HUM.

Witnesses:

E. S. MERRILL, E. Pirxm. 

